Xquery declare updating function

The only difference is that this expression must also include the , without any additional element information.

The expression itself is nearly identical to the one used for the untyped column, except that you must precede the element name with the namespace alias and a colon ().

As with the untyped column, the expression will return the entire XML document because it specifies only the root node.

But at its simplest, the expression must define the path of the element you want to retrieve.

In the following example, I use the column is a bit more complex.

However, that’s true only when returning the entire XML value.

If instead you want to work with individual components within an XML instance, such as when retrieving the value of a single attribute, you must use one of the five methods that available to the methods require only one argument: an XQuery expression that identifies the XML components to be retrieved or modified, and any actions to be taken on those components.

XQuery, a powerful scripting language used specifically to access XML data, contains the elements necessary to create complex expressions that can include functions, operators, variables, and values.

MSDN provides a complete XQuery language reference that you can refer to while you work with the method might also require a Transact-SQL data type as a second argument or a table and column alias tagged on after the arguments.

You need only specify the database object, the method name, and an XQuery expression, as shown in the following syntax: You’ll notice that the XQuery expression is entirely enclosed in single quotes and those are enclosed in parentheses.

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